39. What does the phrase “affluent countries” most likely mean based on the passage?
(A) Countries with a high level of industrial pollution
(B) Wealthy nations with better living conditions and healthcare access
(C) Countries with a high prevalence of allergies but poor medical services
(D) Countries with lower pollen exposure due to optimal environmental conditions
(E) Countries that have a large second generation migrant population
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統計: A(3), B(16), C(0), D(0), E(1) #3431590
統計: A(3), B(16), C(0), D(0), E(1) #3431590